opticalflow

How can I find speed of a feature point (certain pixel) in dense optical flow for temporal window of 15 frames? Question: I want to track every pixel as feature point for temporal window of 15 frames using Farneback Dense optical flow. Using flow=cv2.calcOpticalFlowFarneback(prvs,next,None,0.5,3,15,3,5,1.2,0) , it shows dx and dy of every pixel in previous …

cv2.calcOpticalFlowPyrLK Adding New Points Question: The Problem I am trying to add custom points for tracking in Lucas Kanade optical flow tracking method. But I get an Assertion failed error when I call this function after inserting my custom points to the points array that was automatically calculated. OpenCV Error: Assertion failed ((npoints = prevPtsMat.checkVector(2, …